Silver 70G450 Canning Lid with Liner | 12 Pack

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Silver 70G450 Canning Lid with Liner has a continuous thread, meaning that it is a Mason-style screw-on closure mechanism where the jar and lid are both threaded in one continuous bead around the entire circumference of the opening. The screw on canning lid is made of strong tinplate with a plastisol liner, a rubbery gasket that is attached to the canning jar lid. It is a common liner that is used for applications such as food canning and vacuum packing because it provides a tamper evident and hermetic seal (or airtight seal).